May weather forecast
Palmyra, PA

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Weather in May

May, the last month of the spring in Palmyra, is an agreeable month, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 69.8°F (21°C).

Temperature

A rise in the average high-temperature is observed during May, moving from a mild 59.5°F (15.3°C) in April to an agreeable 69.8°F (21°C). Throughout May, Palmyra records an average temperature of 51.3°F (10.7°C) at night.

Humidity

February and May, with an average relative humidity of 81%, are the most humid months.

Rainfall

May is the month with the most rainfall. Rain falls for 18.4 days and accumulates 3.15" (80mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In May, the average length of the day in Palmyra is 14h and 26min.
On the first day of May, sunrise is at 6:04 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:29 pm EDT.

Sunshine

The average sunshine in May is 8.4h.

UV index

The months with the highest UV index in Palmyra are May through July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What are May temperatures in Palmyra?

In Palmyra, in May, the average high-temperature is 69.8°F (21°C), and the average low-temperature is 51.3°F (10.7°C).

What is the most humid month in Palmyra?

The months with the highest humidity are February and May, with an average relative humidity of 81%.

What is the average humidity in May in Palmyra?

The average relative humidity in May is 81%.

What is the wettest month in Palmyra?

The month with the most rainfall in Palmyra, Pennsylvania, is May, when the rain falls for 18.4 days and typically aggregates up to 3.15" (80mm) of precipitation.

How many days does it rain in May in Palmyra?

In Palmyra, in May, during 18.4 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

When it does not snow in Palmyra?

In Palmyra, Pennsylvania, snow does not fall in May through September.

Does it snow in Palmyra in May?

In May, in Palmyra, Pennsylvania, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Palmyra have in May?

In Palmyra, Pennsylvania, the average day length in May is 14h and 26min.

When are sunrise and sunset in May in Palmyra?

On the first day of May, sunrise is at 6:04 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:29 pm EDT.

How many hours of sunshine does Palmyra have in May?

In Palmyra, the average sunshine duration in May is 8.4h.

When is the highest UV index in Palmyra?

May through July, with an average maximum UV index of 6, are months with the highest UV index in Palmyra, Pennsylvania.

How high is the UV index in May in Palmyra?

In Palmyra, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Palmyra, PA

Average temperature in May - Palmyra, PA
  • Average high temperature in May: 69.8°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in May
Palmyra, PA

Average pressure in May - Palmyra, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Palmyra, PA

Average wind speed in May - Palmyra, PA
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in May
Palmyra, PA

Average humidity in May - Palmyra, PA
  • Average humidity in May: 81%

The months with the highest relative humidity are February and May (81%).
The months with the lowest relative humidity are March and April (76%).

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Average rainfall in May
Palmyra, PA

Average rainfall in May - Palmyra, PA
  • Average rainfall in May: 3.15"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in May
Palmyra, PA

Average rainfall days in May - Palmyra, PA
  • Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in May
Palmyra, PA

Average snowfall in May - Palmyra, PA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Palmyra, PA

Average snowfall days in May - Palmyra, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Palmyra, PA

Average daylight in May / Average sunshine in May - Palmyra, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in May
Palmyra, PA

Average sunshine days in May - Palmyra, PA
  • Average sunshine days in May: 10 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10 days).

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Average UV index in May
Palmyra, PA

Average UV index in May - Palmyra, PA
  • Average UV index in May: 6

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in May
Palmyra, PA

Average cloud cover in May - Palmyra, PA
  • Average cloud cover in May: 47

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Palmyra, PA

Average visibility in May - Palmyra, PA
  • Average visibility in May: 5mi

The months with the highest visibility are January, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are February, May, September and October (5mi).

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Palmyra, Pennsylvania, USA

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